| c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. |
| SPDX-License-Identifier: curl |
| Long: etag-compare |
| Arg: <file> |
| Help: Pass an ETag from a file as a custom header |
| Protocols: HTTP |
| Added: 7.68.0 |
| Category: http |
| Example: --etag-compare etag.txt $URL |
| See-also: etag-save time-cond |
| Multi: single |
| --- |
| This option makes a conditional HTTP request for the specific ETag read |
| from the given file by sending a custom If-None-Match header using the |
| stored ETag. |
| |
| For correct results, make sure that the specified file contains only a |
| single line with the desired ETag. An empty file is parsed as an empty |
| ETag. |
| |
| Use the option --etag-save to first save the ETag from a response, and |
| then use this option to compare against the saved ETag in a subsequent |
| request. |
